Those with severe edema of IgA nephropathy should avoid salt, limit the intake of food in protein and drink less water. If edema is not serious, you can enter a low-salt diet; No edema, no restriction on drinking water and protein food intake; People who urinate blood and people who get angry easily under the microscope should drink more water and eat more foods such as apples, sugar, black sesame seeds and fungus to nourish yin and reduce fire. Patients with IgA nephropathy uremia and hyperkalemia should not eat hyperkalemic food. Banana, citrus, potato, tomato, pumpkin, tea, soy sauce, monosodium glutamate; Hypokalemia patients are just the opposite.